JP2001261521A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cosmetic which has excellent water-retaining and oil- reinforcing effects for skins and is suitable for skin lotions, hair cosmetic, and so on. SOLUTION: This transparent cosmetic comprises water, one or more of oily components selected from triethyl citrate, tributyl citrate, acetyltriethyl citrate, acetyltributyl citrate, diisobutyl adipate and diisopropyl adipate, and ethanol and/or one or more of water-soluble polyhydric alcohols selected from the group consisting propylene glycol, dipropylene glycol, 1,3-butylene glycol and polyethylene glycol, and does not contain a surfactant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to cosmetics, and more particularly to cosmetics in which an oil component is blended without using a surfactant.

[0002]

2. Description of the Related Art The main purpose of a cosmetic such as a lotion is to supply moisture to the stratum corneum to keep the skin moist, and therefore, a moisturizing component is usually added to the lotion. However, for example, the skin after face washing has lost the sebum film, and it is not always sufficient to adjust the physiological function of the skin with lotion alone. For the purpose of supplementing the skin with oil, an emulsion or cream is used. Because of this, skin care requires a number of products, which inevitably increase the time required to use them, especially when you are busy, such as in the morning, and tend to be rough and inadequate. Instead, it can even have a negative effect on your skin. Therefore, a cosmetic product that supplements moisture with one cosmetic product and has a refueling effect has been desired.

[0003]

In order to respond to this problem, it is possible to add an oil component to the lotion.
Conventionally, when preparing a lotion containing an oily component, it is necessary to solubilize the oily component using an appropriate surfactant. However, since the surfactant is composed of a compound having a relatively high molecular weight, such a cosmetic is used. Water not only impairs the fresh feeling of use required for lotions, but also has the disadvantage of giving the sticky feeling peculiar to surfactants.

[0004] On the other hand, attempts have been made to prepare a lotion containing an oily component without using a surfactant by devising a manufacturing method, but the stability is relatively poor.
Further, the production equipment such as an ultra-high pressure homogenizer is required, so that the production cost is increased. Therefore, without using a surfactant,
There has been a demand for a lotion having not only a moisturizing effect but also an oil replenishing effect and having a stable, uniform and transparent appearance.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted various studies to solve the above-mentioned problems, and as a result, a specific oily component, water and a specific water-soluble polyhydric alcohol are composed as main components. As a result, the present inventors have found that a surfactant-free transparent cosmetic having a moisturizing effect and a refueling effect can be obtained, thereby completing the present invention. The cosmetic of the present invention is characterized by comprising one or more oily components selected from the group consisting of water and a lower alkyl ester of citric acid and a lower alkyl ester of adipic acid, and a water-soluble polyhydric alcohol. It is. Furthermore, the present invention has also found that, by adding a certain amount of ethanol to the above composition, the composition is suitable for cosmetics having improved feeling in use, especially for hair cosmetics.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The lower alkyl ester of citric acid and the lower alkyl ester of adipic acid used as the oily component in the present invention are mixed in water to such an extent that the prepared cosmetic can be kept in a transparent state. Things
Those which show a bunkering effect when used are desirable. As the citric acid lower alkyl ester, any of mono-, di- or tri-esters may be used as long as the above requirements are satisfied, but tri-esters are more preferable. More specifically, triethyl citrate, tributyl citrate, acetyl triethyl citrate, acetyl tributyl citrate and the like are preferable. Similarly, the lower alkyl adipate may be a mono- or di-ester, and more specifically, diisobutyl adipate, diisopropyl adipate and the like can be used. These can be used alone or in combination of two or more.

As the water-soluble polyhydric alcohol, one or more of alkylene glycol such as propylene glycol, dipropylene glycol and 1,3-butylene glycol or polyethylene glycol can be used. Propylene glycol and butylene glycol may be used in both α-form and β-form. As water as one of the bases, distilled water, purified water, deionized water, sterilized water, and the like, which are usually used for producing cosmetics, can be used.

[0008] In preparing the cosmetic of the present invention, the cosmetic can be obtained by mixing the above-mentioned oily component, water-soluble polyhydric alcohol and / or ethanol and water at an arbitrary ratio and mixing them with a mixer or the like. Mixing does not require an apparatus such as an ultra-high pressure homogenizer and can be prepared by mixing and stirring at normal temperature and normal pressure. The amount of the oil-based component and the water-soluble polyhydric alcohol is selected in such an amount that the amount of the oil-based component that can obtain a replenishing effect at the time of use can make the prepared cosmetic transparent state. used. Specifically, the oil component is 0.1 to 10% (weight%: the same applies hereinafter), preferably 0.5 to 5%, the water-soluble polyhydric alcohol 0.4 to 60%, preferably 2 to 30%, water Should be used in the range where the remainder is used. When ethanol is added, 0.2-70%, preferably 1%, is added to the composition.
Use in the range of ５０50%.

In the cosmetic of the present invention, in addition to the base consisting of the above three components, fragrances, coloring agents, preservatives, ultraviolet absorbers and other auxiliaries, water-soluble vitamins, which are usually blended in this type of field,
An active ingredient such as a hair growth / hair growth ingredient can be added. The formulation of these auxiliaries and the like may be blended with water, an oil component or a water-soluble polyhydric alcohol before the preparation of the base,
It may be added to a lotion base at the time of preparation or after preparation.

[0010]

The present invention will be described below with reference to examples.
The present invention is not limited to these. Example 1 Triethyl citrate 2.5% 1,3-butylene glycol 5.0% Polyethylene glycol 5.0% Flavor and colorant Suitable amount Water Suitable amount Total amount 100.0% The above components were dissolved and mixed by a conventional method. Make it a lotion. Example 2 Tributyl citrate 2.5% Propylene glycol 5.0% Polyethylene glycol 5.0% Perfume and colorant Suitable amount Water Suitable amount Total amount 100.0% The above components are dissolved and mixed by a conventional method to make a lotion. .

Example 3 Diisobutyl adipate 2.5% Ethanol 5.0% Polyethylene glycol 5.0% Flavor and colorant Suitable amount Water Suitable amount Total amount 100.0% The above components are dissolved and mixed by a conventional method to make up lotion. And Example 4 Triethyl citrate 3.0% Ethanol 50.0% Flavor and colorant Suitable amount Water Suitable amount Total amount 100.0% The above components are dissolved and mixed by a conventional method to prepare a hair cosmetic.

Test Examples (Test Methods) Cosmetics having the compositions shown in Table 1 were prepared, and their appearance and usability were evaluated according to the following criteria. Table 1 also shows the results. Appearance evaluation criteria Each specimen was visually observed, and the results were evaluated in the following three grades. ：: Uniformly transparent △: Slight oil separation was observed ×: Oil separation was clearly observed Usability evaluation criteria Each sample was tested for use by a panel of 10 persons, and was tested against the skin shown in Table 1. The results of each evaluation item were evaluated in the following three stages. ：: good △: neither can be said ×: bad

[0013] Note) POE hydrogenated castor oil is polyoxyethylene hydrogenated castor oil

[0014]

The cosmetic of the present invention selects a monoglyceryl ester such as triethyl citrate as an oily component,
In order to stably blend this, by mixing specific water-soluble polyhydric alcohols such as polyethylene glycol and 1,3-butylene glycol at a specific ratio, a transparent and uniform cosmetic without using a surfactant. Can be prepared. Further, the present invention, by adding ethanol to the above composition, it is possible to prepare a more uniform and excellent feeling of use cosmetics,
In addition to use as a lotion, it can be used as a cosmetic for hair. When used for the hair, a fixed amount of ethanol is added and blended to enhance penetration into the hair, smooth brushing and the like, and furthermore eliminate stickiness to obtain a light feeling. A special device such as an ultrahigh-pressure homogenizer is not required for preparing the cosmetic of the present invention, and the cosmetic can be prepared by mixing and stirring at normal temperature and normal pressure. In addition, at the time of use, at the beginning, the freshness of the lotion is felt, and then it has the unique property of changing to a feeling like a milky lotion / cream, and the oily component is present on the skin The lubricating effect is provided, and the effect of facilitating massage is also exerted.

Claims (4)

[Claims] 1. A water-soluble polyhydric alcohol and / or ethanol comprising water, one or more oil components selected from the group consisting of lower alkyl esters of citric acid and lower alkyl esters of adipic acid. And cosmetics. 2. The oily component is one or more compounds selected from triethyl citrate, tributyl citrate, acetyl triethyl citrate, acetyl tributyl citrate, diisobutyl adipate and diisopropyl adipate. The cosmetic according to claim 1, which is used. 3. The cosmetic according to claim 1, wherein the water-soluble polyhydric alcohol is one or more water-soluble polyhydric alcohols selected from alkylene glycols and polyethylene glycols. 4. Water and one or more oily components selected from triethyl citrate, tributyl citrate, acetyl triethyl citrate, acetyl tributyl citrate, diisobutyl adipate and diisopropyl adipate, and propylene glycol; One or two selected from the group consisting of dipropylene glycol, 1,3-butylene glycol and polyethylene glycol
The surfactant-free transparent cosmetic according to claim 1, comprising at least one kind of water-soluble polyhydric alcohol and / or ethanol.